Drive axle assembly of short-tread loader

Abstract

The utility model discloses a drive axle assembly of a short-tread loader. A main transmission assembly is mounted in the middle of an axle housing and comprises a driven spiral bevel gear, a driving spiral bevel gear and a half axle gear; the wheel edge assembly is arranged on the supporting shaft and comprises a planet wheel, a sun wheel and an inner gear ring; the wheel shell is installed on the supporting shaft through a bearing, and the wheel shell and the wheel frame are connected through a bolt and then jointly serve as a power output end. One end of the half shaft is connected with the power output end of the main transmission assembly, and the other end is connected with the power input end of the hub assembly; the brake is positioned between the wheel side assembly and the main transmission assembly; each frame mounting plate of the axle housing is provided with straight-line-shaped single-row bolt holes, the center distance between the two rows of bolt holes is 700-830 mm, the total height of the wheel housing is 170-190 mm, and the total height of the wheel carrier is 160-180 mm, so that the wheel track is shortened. The drive axle is simple and compact in structure, low in manufacturing and using cost and safe and reliable in operation, and solves the problems that the manufacturing cost is high, the speed of the whole vehicle is affected and the energy consumption is high due to the fact that an existing short-wheel-track loader is matched with a large-wheel-track drive axle.

Description

TECHNICAL FIELD

[0001] The utility model relates to engineering machinery loader drive axle technical field, concretely relates to a short wheel track loader drive axle assembly. BACKGROUND

[0002] The international engineering machinery market requires the whole machine width of the loader to be different from that in China, and the international market customers require the whole machine width to be narrower, but the industry currently generally matches the big wheel track drive axle, and the whole machine width is reduced by assembling the eccentric wheel rim, each frame mounting plate of the axle housing is provided with two mounting bolt holes on the left and right, four bolt holes are arranged in a square shape, the total height of the wheel housing is 210mm, and the total height of the wheel frame is 140mm, the defects are that the drive axle assembly is longer, heavier, and has high material cost, and the drive axle assembly has high energy consumption due to the heavy weight and affects the vehicle speed. SUMMARY

[0003] The utility model aims at solving the above defects, and provides a short wheel track loader drive axle assembly which is simple and compact in structure, low in manufacturing and using cost, safe and reliable in operation, and solves the problems of high manufacturing cost, high energy consumption, and influence on the vehicle speed caused by matching the big wheel track drive axle of the existing short wheel track loader.

[0004] To achieve the above purpose, the utility model discloses a short wheel track loader drive axle assembly which comprises an axle housing 5, a supporting shaft 12, a main drive assembly 6, a wheel edge assembly 3, a wheel housing 13, a wheel frame 15, a brake 11 and a half shaft 4, the main drive assembly 6 is installed at the middle part of the axle housing 5, the main drive assembly 6 comprises a driven spiral bevel gear 7, a driving spiral bevel gear 9 and a half shaft gear 10, the driving spiral bevel gear 9 is connected with an input flange 8 through a spline, the wheel edge assembly 3 is installed on the supporting shaft 12, the wheel edge assembly 3 comprises a planetary gear 1, a sun gear 2 and an inner ring gear 14, the wheel housing 13 is installed on the supporting shaft 12 through a bearing, the wheel housing 13 and the wheel frame 15 are connected through bolts and jointly serve as a power output end, one end of the half shaft 4 is connected with the power output end of the main drive assembly 6, and the other end is connected with the power input end of the wheel edge assembly 3, the brake 11 is located at the middle part of the wheel edge assembly 3 and the main drive assembly 6, the bolt holes of each frame mounting plate of the axle housing 5 are all provided with a single-row structure, so that the transverse width of the frame mounting plate is shortened, the total length of the axle housing is shortened, the center distance A of the bolt holes arranged in a single row is 700-830mm, the total height B of the wheel housing 13 is 170-190mm, and the total height C of the wheel frame 15 is 160-180mm, so as to further shorten the wheel track.

[0005] The short wheel track loader drive axle assembly has the following technical features and beneficial effects through the optimized design:

[0006] 1. The bolt hole of each plate of the axle frame mounting plate of the axle housing is arranged as a single row of linear structure, the center distance A of the bolt holes arranged in two rows is 700-830mm, so as to shorten the transverse width of the axle frame mounting plate, shorten the total length of the axle housing, better arrange the whole machine axle frame mounting plate, reduce the weight of the axle assembly, and reduce the manufacturing cost.

[0007] 2. The total height of the wheel housing is shortened by 20-40mm, and the total height of the wheel track is lengthened by 20-40mm, so as to further shorten the wheel track.

[0008] 3. Through the above optimization, the wheel track of the drive axle is obviously shortened, the load of the wheel bearing is smaller after the wheel track is shortened, the overall rigidity of the drive axle is improved, the failure rate of the drive axle is reduced, the overall performance and reliability of the drive axle are improved, and the problems of high manufacturing cost, high energy consumption and influence on the vehicle speed caused by the matching of the large wheel track drive axle of the existing short wheel track loader are solved.

[0009] 4. The structure is simple and compact, the manufacturing and using cost is low, and the quality is reliable. DETAILED DESCRIPTION

[0010] Figure 1 is a main sectional view structure schematic diagram of a short wheel track loader drive axle assembly.

[0011] Figure 2 is Figure 1 a middle axle housing sectional view structure schematic diagram.

[0012] Figure 3 is Figure 1 a middle wheel housing sectional view structure schematic diagram.

[0013] Figure 4 is Figure 1 a middle wheel frame sectional view structure schematic diagram.

[0014] The drawings show that the planet wheel 1, the sun wheel 2, the wheel edge assembly 3, the half shaft 4, the axle housing 5, the main transmission assembly 6, the passive spiral bevel gear 7, the input flange 8, the driving spiral bevel gear 9, the half shaft gear 10, the brake 11, the support shaft 12, the wheel housing 13, the inner tooth ring 14, and the wheel frame 15. DETAILED DESCRIPTION

[0015] The specific implementation of the short wheel track loader drive axle assembly of the utility model will be further described in combination with the drawings.

[0016] Figures 1-4As shown, the short wheelbase loader drive axle assembly of the utility model comprises an axle housing 5, a support shaft 12, a main drive assembly 6, a wheel edge assembly 3, a wheel housing 13, a wheel frame 15, a brake 11 and a half shaft 4; the main drive assembly 6 is installed at the middle part of the axle housing 5, and the main drive assembly 6 comprises a driven spiral bevel gear 7, a driving spiral bevel gear 9 and a half shaft gear 10; the driving spiral bevel gear 9 is connected with an input flange 8 through a spline; the wheel edge assembly 3 is installed on the support shaft 12, and the wheel edge assembly 3 comprises a planetary gear 1, a sun gear 2 and an inner ring gear 14; the wheel housing 13 is installed on the support shaft 12 through a bearing, and the wheel housing 13 and the wheel frame 15 are connected through bolts and jointly serve as a power output end; one end of the half shaft 4 is connected with the power output end of the main drive assembly 6, and the other end is connected with the power input end of the wheel edge assembly 3; the brake 11 is located at the middle part of the wheel edge assembly 3 and the main drive assembly 6; the bolt holes of each frame mounting plate of the axle housing 5 are arranged in a single row in a one-character structure, so as to shorten the transverse width of the frame mounting plate and the total length of the axle housing; the center distance A of the bolt holes arranged in two rows in a one-character structure is 700-830 mm; the total height B of the wheel housing 13 is 170-190 mm, and the total height C of the wheel frame 15 is 160-180 mm, so as to further shorten the wheelbase.

[0017] The principle of the above short wheelbase loader drive axle assembly is that the power transmitted by a gearbox is input to the input flange 8 of the main drive assembly 6, the input flange 8 serves as a power input element, the input flange 8 is connected with the driving spiral bevel gear 9 through a spline, the driving spiral bevel gear 9 and the driven spiral bevel gear 7 realize the change of force direction and one-stage reduction through gear meshing, the power is transmitted to the wheel edge assembly 3 through the half shaft 4 after one-stage reduction by the half shaft gear 10 of the main drive assembly 6 to realize two-stage reduction, the half shaft 4 is connected with the sun gear 2 of the wheel edge assembly 3 through a spline, the sun gear 2 realizes two-stage reduction through the planetary gear 1 and the inner ring gear 14, and the power is finally output through the wheel housing 13 and the wheel frame 15; when braking is needed under working conditions, the brake 11 is used to realize braking.

[0018] The short wheelbase loader drive axle assembly of the utility model adopts optimized design, on the one hand, the bolt holes of each plate of the frame mounting plate are arranged in a single row in a one-character structure, and the center distance A of the bolt holes arranged in two rows in a one-character structure is 700-830 mm, so as to shorten the transverse width of the frame mounting plate and the total length of the axle housing; on the other hand, the total height B of the wheel housing is 170-190 mm, which is shortened by 20-40 mm, the total height C of the wheelbase is 160-180 mm, which is lengthened by 20-40 mm, and the wheelbase is further shortened. After the wheelbase is shortened, the load of the wheel edge bearing is smaller, the overall rigidity of the drive axle is improved, the reliability of the drive axle is finally improved, the performance of the whole machine is improved, the failure rate of the drive axle is reduced, and the problems of high manufacturing cost, influence on vehicle speed and high energy consumption caused by matching the large wheelbase drive axle of the existing short wheelbase loader are solved.

Claims

1. A short wheelbase loader drive axle assembly, comprising an axle housing (5), a support shaft (12), a main drive assembly (6), a wheel end assembly (3), a wheel housing (13), a wheel carrier (15), a brake (11) and a half shaft (4); the main drive assembly (6) is installed in the middle of the axle housing (5), the main drive assembly (6) comprises a driven spiral bevel gear (7), a driving spiral bevel gear (9) and a half shaft gear (10), the driving spiral bevel gear (9) is connected with an input flange (8) through a spline; the wheel end assembly (3) is installed on the support shaft (12), the wheel end assembly (3) comprises a planetary gear (1), a sun gear (2) and an inner ring gear (14); the wheel housing (13) is installed on the support shaft (12) through a bearing, the wheel housing (13) and the wheel carrier (15) are connected through bolts and jointly serve as a power output end; one end of the half shaft (4) is connected with a power output end of the main drive assembly (6), and the other end is connected with a power input end of the wheel end assembly (3); the brake (11) is located in the middle of the wheel end assembly (3) and the main drive assembly (6); characterized in that: The bolt hole of each frame mounting plate of the axle housing (5) is arranged in a single row structure, so as to shorten the transverse width of the frame mounting plate and the total length of the axle housing, and the center distance A of the two rows of bolt holes is 700-830 mm; the total height B of the wheel housing (13) is 170-190 mm, and the total height C of the wheel frame (15) is 160-180 mm, so as to further shorten the wheel track.

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